Cat-head for drilling apparatus



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April 5, 1932. E. E. GREVE CAT HEAD FOR DRILLiNG APPARATUS Fi led May25, 1928 Patented Apr, 15, 1932' f ATZ'NTY'VO T OIL WELL "SUPPLYGOMIEANY, OF

TION OF NEW JERSEY CAT-HEAD Eon-DRILLING APPARATUS Ap lication filed May25, 1928; Serial No. 280,522.

This inventionrelates to improvements in cat-heads designed for useinconnection with drilling apparatus employed in" the oil and gasfields,andfthe present invention isespecially directed to a cat-head that maybe readily'applied to and removed from a fly wheel of an engine of thecharacter used in the oil fields. When rigging up a well, the engine isusually the first unit installed; but, heretofore, theengine has notbeen equipped with a cat-head, and the handling of heavy parts of therigging, etc. has necessitated considerable unnecessary work due totheabsence of a cat-head or its equivalent onjthe engine. The primeobject of the present invention is to provide a simple and efficientcat-head construction that may be readily applied to and removed fromthe fly wheel of an engine,

and utilized for handling different parts of the well rigging, etc.

A further object of the present invention is to provide a cat-headconstruction including integral brackets or arms having meansparticularly designed for applyingand securing the cat-head structure tothe spokes of a fly wheel; 2

In the accompanying I drawings, which illustrate an application ofv myinvention Fig. 1 is an elevational view of a fly wheel of anengine,showing my invention applied.

' beris designed to cooperate with the head thereto; Fig. 2, a detailsectional view of a portion of an engine fly wheel and the cat-headembodying my invention applied thereto, the section being taken'on lineIT1I of Fig. 1; and I c Fig. 3, a detail view particularly showing themanner of connecting the cat-head construction to the spokes .of theflywheel, the .view being taken on iine IIIIII of Fig. 1. Referringtothe'drawings, 5 designates a fly wheel of the character employed onsingle cylinder steam engines of the type employed in the oil and gasfields. This wheel 5 is designed to be mounted on an end of the enginedrive shaft 6 and secured thereto by a key Tenteredin thegrooves of theshaft and the hub portion '8 of the wheel, respectively. 9.

PITTSBURGH, PENNSYLVANIA; ACORPQRA- designates a nut on the threaded endof the key, and 10 the spokes of thewheel.

The cat-head embodying my invention, and

as illustrated and as preferred, comprises a hollow body portion ll openat-the end "12, and is formed with flange portions13 and 14 located atthe opposite ends of the ropereceiving portioniof the head. At one end,

the head is provided 1 with an outwardly bulged portion 15, thelatterhaving a flat face 16 which is adapted to be centered. on

the end of the enginedrive shaftbymeans of a headedscrew bolt 17passedthrough an opening 18 of the portion. 15 orthe face 16 thereof,and entered ina threaded recess formed in the shaftfi. In addition tothe opening 18, -portion.;-15is formed with an,

As illustrated, each bracket at its outer end is formed jwith a head 21having a recess 22 3 therein, adapting the head 21 to be fitted upon aspoke of the fly; wheel. Head 21 is also formed with a'pair of aperturedlugs 23 lo- I cated adjacent the spoke-receiving recess 22..

24edesignates a clamp member. This mem- 21 for locking the cat-headstructure to the wheel and, for this purpose, is formed withbolt-receiving lugsI25r-having the openings. thereof, when the clamp isapplied, adapted to register with the openings of the aperturedv lugs 23in order to receive the headed clampingbolts 26.

i i It will be noted that the cat-head may be applied to the fly wheelwithslight labor by simply positioning it on the end of the shaft andclamping the heads of the brackets to the spokes by means of the clampmembers 24 and the cooperatingbolts 26-, and turning thebolt 17 intolocking engagement; and, of course, it may be easily removed from thewheel.

I claim:

1. Acat-head comprising a hollow, gener-.

ally cylindrical body having outwardly extending rope-confining flangesat the ends thereof, a rearwardly bulged end wall integral with one ofsaid flanges, said wall being centrally apertured for coaction with acentering member, and brackets integral with the body extending from thejunction of the wall therewith and to a point beyond the same forattachment'to afly-wheel.

2. The combination with driving means having a central element andspokes, said central element having a central opening, of a cat-headprovided with a projection for engaging said central opening in saidcentral element for centering the cat-head, a bracket formed with aspoke receiving recess and means for'clamping the bracket and a spoketogether.

3. The combination with driving means having a central element andspokes, of a cathead provided with arms, each formed with aspoke'receiving recess, clamping means cooperating with each arm forclamping a spoke in said recess, and a securing device engaging thecat-head and said central element for centering the cat-head.

4. A cat-head comprising a hollow generally cylindrical body portionopen at one end and having a transverse wall at the other end, andbrackets adapted to be attached to the spokes of a flywheel, saidbrackets being formed integral with the body portion and extending agreater radial distance from the axis of the cat-head than the peripheryof the c lindrical body portion thereof.

5. he combination with driving means havin a central element and spokes,said centra element having a central threaded o ening, of a cat-headprovided with a t neaded projection for engaging said threaded openingin said central element for centering the cat-head, a bracket formedwith a spoke receiving recess andmeans for clamping the bracket and :1spoke together.

In testimony whereof I affix my signature.

EDGAR E. GREVE.

